Math

In math we learned rounding sums.
If you are rounding money then you always round up
heres an example      $25.43 > $30.00
                                
                                  $57.71 > $60.00
                                                  ______
        so you would need about  $90.00

If you were just rounding any number then you round it either up or down
heres an example                    791 > 800
                                  
                                                456 > 500
                                                          ____
      so your answer would be about   1300

Always remember to round to the highest place value.